"Happy Birthday" is a 1980 single written, produced, and performed by Stevie Wonder for the Motown label. Wonder, a social activist, was one of the main figures in the campaign to have the birthday of Dr. Martin Luther King, Jr. become a national holiday, and created this single to make the cause known.
"Happy Birthday" is a Rap/R&B song by Flipsyde from their album We the People. Featuring a sample from the song "Gomenasai" by t.A.T.u., it was released as the album's second single on December 27, 2005.